28566264225 has 12 divisors (see below), whose sum is σ = 47229556976. Its totient is φ = 15235340880.

The previous prime is 28566264119. The next prime is 28566264227. The reversal of 28566264225 is 52246266582.

It is not a de Polignac number, because 28566264225 - 2⁸ = 28566263969 is a prime.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28566264227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190441687 + ... + 190441836.

Almost surely, 2^28566264225 is an apocalyptic number.

28566264225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28566264225 is a deficient number, since it is larger than the sum of its proper divisors (18663292751).

28566264225 is a wasteful number, since it uses less digits than its factorization.

28566264225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380883536 (or 380883531 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 48.

The spelling of 28566264225 in words is "twenty-eight billion, five hundred sixty-six million, two hundred sixty-four thousand, two hundred twenty-five".